This page presents a long range weather forecast for Rapid City in May as well as other months. You can quickly get a brief overview of the weather to expect in May on a daily basis.
The Rapid City extended forecast data provided is based on the average values of previous years.
Long range weather forecast
Select a month and click on a day for more information:
Wednesday
May 1
18° / 5°
Thursday
May 2
14° / 5°
Friday
May 3
10° / 2°
Saturday
May 4
17° / 1°
Sunday
May 5
22° / 6°
Monday
May 6
18° / 8°
Tuesday
May 7
13° / 7°
Wednesday
May 8
7° / 6°
Thursday
May 9
13° / 6°
Friday
May 10
11° / 7°
Saturday
May 11
19° / 6°
Sunday
May 12
26° / 10°
Monday
May 13
29° / 12°
Tuesday
May 14
21° / 14°
Wednesday
May 15
16° / 9°
Thursday
May 16
13° / 7°
Friday
May 17
20° / 11°
Saturday
May 18
22° / 11°
Sunday
May 19
19° / 9°
Monday
May 20
21° / 7°
Tuesday
May 21
18° / 9°
Wednesday
May 22
19° / 5°
Thursday
May 23
22° / 10°
Friday
May 24
22° / 9°
Saturday
May 25
22° / 10°
Sunday
May 26
22° / 11°
Monday
May 27
25° / 12°
Tuesday
May 28
25° / 10°
Wednesday
May 29
22° / 12°
Thursday
May 30
19° / 11°
Friday
May 31
23° / 10°
Rapid City 30 days weather forecast
Check out our estimated 30 days weather forecast for Rapid City, this data is based on the average weather in Rapid City in the last few years.
For a more accurate and detailed forecast, check out the 14 day weather for Rapid City next to the desired date.